I have currently problems using the Kotlin Stdlib in my Android Projects. Autocomplete is not showing results from the stdlib. I tried everything from Invalidate Caches Restart, Re-installing Android Studio, downgrading to Canary 13. Opening the very same project in IntelliJ IDEA it works correctly but since this is a compose project its not an option. Any other ideas why this could be happening?

Why is IJ not an option? AS is just a customized IJ, so it should work fine, shouldn't it?

I'm using Compose so I'm not sure

I see, you probably need Android Tools 4.2 which are part of Android Studio 4.2 which currently is only in beta (canary) and thus also no sources published yet, that could be incorporated into IntelliJ.